b) compute the mean for each class. Round to two decimal places? C) without computing the standard deviation for each class, explain which class has the higher standard deviation and why you think is so? D) compute the standard deviation for each class. round to two decimal places

An instructor is comparing the performance of students in two classes. He records the final percentage each student has earned. Final Percentages Class A 47 47 49 33 36 81 80 78 89 77 85 59 59 79 Final Percentages Class B 72 18 13 67 40 36 67 84 33 89 93 77 71 37 a) Without computing the mean, explain which class has the higher mean and why you think this is so